7. tinggi limas 12 cm panjang 10 cm lebar 10 cm Luas permukaan limas segi empat tersebut adalah....
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Jawaban
La = s²
La = 10²
La = 100 cm²
Lp. Limas = ⅓ × La × T
Lp. Limas = ⅓ × 100 × 12
Lp. Limas = 100 × 4
Lp. Limas = 400cm²